Imaging lens assembly, camera module and electronic device

ABSTRACT

An imaging lens assembly includes a plastic barrel and an optical element set. The optical element set includes an optical lens element, a light blocking sheet and a light-shielding layer. At least one surface of an object-side peripheral surface and an image-side peripheral surface of the optical lens element includes an annular side wall. An annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element are disposed correspondingly to each other. The light-shielding layer surrounds a central opening of the light blocking sheet and includes an annular concave-curved portion. The annular concave-curved portion is for retaining the light blocking sheet, so that there is no relative displacement in a direction parallel to an optical axis between the annular abutting surface of the light blocking sheet and the annular side wall of the optical lens element.

RELATED APPLICATIONS

This application claims priority to Taiwan Application Serial Number109104100, filed Feb. 10, 2020, which is herein incorporated byreference.

BACKGROUND Technical Field

The present disclosure relates to an imaging lens assembly and a cameramodule. More particularly, the present disclosure relates to a compactcamera module and an imaging lens assembly thereof that are applicableto electronic devices.

Description of Related Art

With the advanced semiconductor manufacturing technologies, theperformances of image sensors are enhanced, and the pixel size isminified. Therefore, camera modules with high image quality becomeindispensable.

Moreover, with the rapid scientific and technological progress, theapplication scope of electronic devices equipped with camera modulesbecomes wider, and the requirements for camera modules and imaging lensassembly thereof are more diverse. However, it is hard for balancing therequirements, such as image quality, sensitivity, aperture size, volumeand field of view, in conventional camera modules and imaging lensassembly thereof. Therefore, a camera module and an imaging lensassembly thereof are provided by the present disclosure to satisfy thedesired requirement.

SUMMARY

According to one aspect of the present disclosure, an imaging lensassembly includes a plastic barrel and an optical element set. Theplastic barrel includes a minimum opening. The optical element setincludes an optical lens element, a light blocking sheet and alight-shielding layer. The optical lens element includes an effectiveoptical portion and a peripheral portion in order from a center to aperiphery thereof. An optical axis of the imaging lens assembly passesthrough the effective optical portion. The peripheral portion surroundsthe effective optical portion. At least one surface of an object-sideperipheral surface and an image-side peripheral surface of theperipheral portion includes an annular side wall, which is in afull-circle form and extends along a direction parallel to the opticalaxis. The light blocking sheet includes an object-side surface, animage-side surface, an annular abutting surface and a central openingsurface. The object-side surface faces towards an object side. Theimage-side surface is located opposite to the object-side surface. Theannular abutting surface is connected between the object-side surfaceand the image-side surface. The annular abutting surface and the annularside wall of the optical lens element are disposed correspondingly toeach other. The central opening surface surrounds and forms a centralopening of the light blocking sheet. The central opening surface isconnected between the object-side surface and the image-side surface.The light-shielding layer surrounds the central opening of the lightblocking sheet and includes an annular concave-curved portion. Thelight-shielding layer extends from the peripheral portion of the opticallens element towards an outer diameter surface of the optical lenselement. The annular concave-curved portion is for retaining the lightblocking sheet, so that there is no relative displacement in thedirection parallel to the optical axis between the annular abuttingsurface of the light blocking sheet and the annular side wall of theoptical lens element. When a maximum diameter of the light-shieldinglayer is ψM, a maximum diameter of the annular abutting surface is ψSd,and a minimum diameter of the central opening surface is ψSa, thefollowing condition is satisfied: 0.03<(ψH−ψSd)/(ψSd−ψSa)<6.0.

According to another aspect of the present disclosure, a camera moduleincludes the imaging lens assembly according to the foregoing aspect.

According to another aspect of the present disclosure, an electronicdevice includes the camera module according to the foregoing aspect andan image sensor. The image sensor is disposed on an image surface of thecamera module.

According to another aspect of the present disclosure, an imaging lensassembly includes a plastic barrel and an optical element set. Theplastic barrel includes a maximum opening. The optical element setincludes an optical lens element, a light blocking sheet and alight-shielding layer. The optical lens element includes an effectiveoptical portion and a peripheral portion in order from a center to aperiphery thereof. An optical axis of the imaging lens assembly passesthrough the effective optical portion. The peripheral portion surroundsthe effective optical portion. At least one surface of an object-sideperipheral surface and an image-side peripheral surface of theperipheral portion includes an annular side wall, which is in afull-circle form and extends along a direction parallel to the opticalaxis. The light blocking sheet includes an object-side surface, animage-side surface, an annular abutting surface and a central openingsurface. The object-side surface faces towards an object side. Theimage-side surface is located opposite to the object-side surface. Theannular abutting surface is connected between the object-side surfaceand the image-side surface. The annular abutting surface and the annularside wall of the optical lens element are disposed correspondingly toeach other. The central opening surface surrounds and forms a centralopening of the light blocking sheet. The central opening surface isconnected between the object-side surface and the image-side surface.The light-shielding layer surrounds the central opening of the lightblocking sheet and includes an annular concave-curved portion. Thelight-shielding layer extends from the peripheral portion of the opticallens element towards an outer diameter surface of the optical lenselement. The annular concave-curved portion is for retaining the lightblocking sheet, so that there is no relative displacement in thedirection parallel to the optical axis between the annular abuttingsurface of the light blocking sheet and the annular side wall of theoptical lens element. When a length along the direction parallel to theoptical axis of the light-shielding layer is L, and a length along thedirection parallel to the optical axis of the plastic barrel is Lb, thefollowing condition is satisfied: 0.0<L/Lb<0.5.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure can be more fully understood by reading thefollowing detailed description of the embodiment, with reference made tothe accompanying drawings as follows:

FIG. 1A is a schematic view of an imaging lens assembly according to the1st embodiment of the present disclosure and an image sensor.

FIG. 1B is a parameter schematic view of part 1B in FIG. 1A.

FIG. 1C is a partially exploded view of the imaging lens assemblyaccording to FIG. 1A.

FIG. 1D is a parameter schematic view of the imaging lens assemblyaccording to the 1st embodiment.

FIG. 1E is a partially three-dimensional and cross-sectional view of theimaging lens assembly according to the 1st embodiment.

FIG. 1F is an exploded view according to FIG. 1E.

FIG. 1G is another partially three-dimensional and cross-sectional viewof the imaging lens assembly according to the 1st embodiment.

FIG. 1H is an exploded view according to FIG. 1G.

FIG. 2A is a schematic view of an imaging lens assembly according to the2nd embodiment of the present disclosure and an image sensor.

FIG. 2B is a parameter schematic view of part 2B in FIG. 2A.

FIG. 2C is a partially exploded view of the imaging lens assemblyaccording to FIG. 2A.

FIG. 2D is a parameter schematic view of the imaging lens assemblyaccording to the 2nd embodiment.

FIG. 2E is a partially three-dimensional and cross-sectional view of theimaging lens assembly according to the 2nd embodiment.

FIG. 2F is an exploded view according to FIG. 2E.

FIG. 2G is another partially three-dimensional and cross-sectional viewof the imaging lens assembly according to the 2nd embodiment.

FIG. 2H is an exploded view according to FIG. 2G.

FIG. 3A is a schematic view of an imaging lens assembly according to the3rd embodiment of the present disclosure and an image sensor.

FIG. 3B is a parameter schematic view of part 3B in FIG. 3A.

FIG. 3C is a partially exploded view of the imaging lens assemblyaccording to FIG. 3A.

FIG. 3D is a parameter schematic view of the imaging lens assemblyaccording to the 3rd embodiment.

FIG. 3E is a partially three-dimensional and cross-sectional view of theimaging lens assembly according to the 3rd embodiment.

FIG. 3F is another partially three-dimensional and cross-sectional viewof the imaging lens assembly according to the 3rd embodiment.

FIG. 3G is an exploded view according to FIG. 3F.

FIG. 4A is a schematic view of an imaging lens assembly according to the4th embodiment of the present disclosure and an image sensor.

FIG. 4B is a parameter schematic view of part 4B in FIG. 4A.

FIG. 4C is a partially exploded view of the imaging lens assemblyaccording to FIG. 4A.

FIG. 4D is a parameter schematic view of the imaging lens assemblyaccording to the 4th embodiment.

FIG. 4E is a partially three-dimensional and cross-sectional view of theimaging lens assembly according to the 4th embodiment.

FIG. 4F is another partially three-dimensional and cross-sectional viewof the imaging lens assembly according to the 4th embodiment.

FIG. 4G is an exploded view according to FIG. 4F.

FIG. 5A is a schematic view of an imaging lens assembly according to the5th embodiment of the present disclosure.

FIG. 5B is a parameter schematic view of part 5B in FIG. 5A.

FIG. 5C is a partially exploded view of the imaging lens assemblyaccording to FIG. 5A.

FIG. 5D is a parameter schematic view of the imaging lens assemblyaccording to the 5th embodiment.

FIG. 5E is a partially three-dimensional and cross-sectional view of theimaging lens assembly according to the 5th embodiment.

FIG. 5F is an exploded view according to FIG. 5E.

FIG. 5G is another partially three-dimensional and cross-sectional viewof the imaging lens assembly according to the 5th embodiment.

FIG. 6A shows a schematic view of an electronic device according to the6th embodiment of the present disclosure.

FIG. 6B shows another schematic view of the electronic device accordingto the 6th embodiment.

FIG. 6C shows a block diagram of the electronic device according to the6th embodiment.

FIG. 7 shows an electronic device according to the 7th embodiment of thepresent disclosure.

FIG. 8 shows an electronic device according to the 8th embodiment of thepresent disclosure.

DETAILED DESCRIPTION 1st Embodiment

FIG. 1A is a schematic view of an imaging lens assembly 100 according tothe 1st embodiment of the present disclosure and an image sensor 107,and FIG. 1A is a cross-sectional view along a plane, on which an opticalaxis z is located, of the imaging lens assembly 100. FIG. 1B is aparameter schematic view of part 1B in FIG. 1A. FIG. 1C is an explodedview of a plastic barrel 110, an optical lens element 130, a lightblocking sheet 160 and a light-shielding layer 170 of the imaging lensassembly 100 according to FIG. 1A. FIG. 1D is a parameter schematic viewof the imaging lens assembly 100 according to the 1st embodiment. InFIG. 1A to FIG. 1D, the imaging lens assembly 100 includes the plasticbarrel 110 and an optical element set 120. The optical element set 120includes the optical lens element 130, the light blocking sheet 160 andthe light-shielding layer 170. Furthermore, the optical element set 120includes a plurality of optical elements. Specifically, the opticalelement set 120 includes optical lens elements 130, 122, 123, 124, 125and 126 in order from an object side za to an image side zb, and alsoincludes the light blocking sheet 160, the light-shielding layer 170, atleast one light blocking sheet 182, at least one spacer 183 and aretainer 184. At least one of the aforementioned optical elements of theoptical element set 120 is disposed in the plastic barrel 110. Moreover,the imaging lens assembly 100 can be applicable to a camera module (notshown in drawings) of an electronic device (not shown in drawings). Theobject side za is a direction towards an imaged object (not shown indrawings) of the camera module and the imaging lens assembly 100thereof. The image side zb is a direction towards an image surface 106of the camera module and the imaging lens assembly 100 thereof. Theimage sensor 107 of the electronic device is disposed on the imagesurface 106.

FIG. 1E is a three-dimensional and cross-sectional view of the plasticbarrel 110, the optical lens element 130, the light blocking sheet 160and the light-shielding layer 170 of the imaging lens assembly 100according to the 1st embodiment. FIG. 1F is an exploded view accordingto FIG. 1E. FIG. 1G is another three-dimensional and cross-sectionalview of the plastic barrel 110, the optical lens element 130, the lightblocking sheet 160 and the light-shielding layer 170 of the imaging lensassembly 100 according to the 1st embodiment. FIG. 1H is an explodedview according to FIG. 1G. Furthermore, each of the plastic barrel 110,the light blocking sheet 160 and the light-shielding layer 170 issubstantially in a closed and circularly annular shape. The optical lenselement 130 is substantially in a circular plate shape with at least oneof a convex surface and a concave surface. Each of FIG. 1E to FIG. 1Hillustrates three-dimensional and cross-sectional view of twocross-sectional planes, which are vertical to each other and intersectat the optical axis z. The light blocking sheet 160 and thelight-shielding layer 170 in FIG. 1A to FIG. 1H may be respectivelymarked with backslash lines and dots to clearly show the imaging lensassembly 100 according to the 1st embodiment of the present disclosure.In FIG. 1A to FIG. 1H, the optical lens element 130 includes aneffective optical portion 149 and a peripheral portion 140 in order froma center to a periphery thereof. The optical axis z of the imaging lensassembly 100 passes through the effective optical portion 149. Theperipheral portion 140 surrounds and is connected to the effectiveoptical portion 149. The peripheral portion 140 includes an object-sideperipheral surface 141 and an image-side peripheral surface 142. Theobject-side peripheral surface 141 faces towards the object side za. Theimage-side peripheral surface 142 faces towards the image side zb. Atleast one surface of the object-side peripheral surface 141 and theimage-side peripheral surface 142 (it is the object-side peripheralsurface 141 in the 1st embodiment specifically) includes an annular sidewall 135, which is in a full-circle form (i.e., in a continuouslyannular shape, instead of being in an annular shape discretely arrangedby a plurality of units) and extends along a direction parallel to theoptical axis z.

The light blocking sheet 160 includes an object-side surface 161, animage-side surface 162, an annular abutting surface 165 and a centralopening surface 167. The object-side surface 161 faces towards theobject side za. The image-side surface 162 faces towards the image sidezb. That is, the image-side surface 162 is located opposite to theobject-side surface 161. The annular abutting surface 165 is connectedbetween the object-side surface 161 and the image-side surface 162. Theannular abutting surface 165 and the annular side wall 135 of theoptical lens element 130 are disposed correspondingly to each other. Thecentral opening surface 167 surrounds and forms a central opening 168 ofthe light blocking sheet 160. The central opening surface 167 isconnected between the object-side surface 161 and the image-side surface162. The central opening surface 167 is located closer to the opticalaxis z than the annular abutting surface 165 thereto. In the 1stembodiment, the image-side surface 162 of the light blocking sheet 160and the object-side peripheral surface 141 of the optical lens element130 are in physical contact. A portion of the annular side wall 135 ofthe optical lens element 130 is disposed closer to the object side zathan the annular abutting surface 165 of the light blocking sheet 160thereto. The annular side wall 135 includes a surface with a normaldirection in a direction vertical to the optical axis z and a surfacewith a normal direction not in the direction vertical to the opticalaxis z, as shown in FIG. 1A and FIG. 1F.

In FIG. 1A to FIG. 1H, the light-shielding layer 170 surrounds thecentral opening 168 of the light blocking sheet 160 and includes anannular concave-curved portion 174. The annular concave-curved portion174 is in an annular shape being concave-curved or forms aconcave-curved ring. The light-shielding layer 170 extends from theperipheral portion 140 of the optical lens element 130 towards an outerdiameter surface 143 of the optical lens element 130. The outer diametersurface 143 is connected between the object-side peripheral surface 141and the image-side peripheral surface 142. The light-shielding layer 170may be or may not be connected to the outer diameter surface 143. Theannular concave-curved portion 174 is for retaining or fixedly disposingthe light blocking sheet 160, so that there is no relative displacementin the direction parallel to the optical axis z between the annularabutting surface 165 of the light blocking sheet 160 and the annularside wall 135 of the optical lens element 130. In the 1st embodiment,the light-shielding layer 170 is connected to the object-side peripheralsurface 141 of the optical lens element 130. The light-shielding layer170 extends towards the outer diameter surface 143 of the peripheralportion 140 along the object-side peripheral surface 141. Thelight-shielding layer 170 is not connected to the outer diameter surface143. The annular concave-curved portion 174 of the light-shielding layer170 is disposed adjacent to the annular side wall 135 and is connectedto the object-side surface 161 of the light blocking sheet 160.

Furthermore, the light-shielding layer 170 is originally in a liquidstate, and has an opaque and attachment ability after curing so as to bedeemed as a retaining element. In the 1st embodiment, each of theplastic barrel 110, the light blocking sheet 160 and the light-shieldinglayer 170 has an opaque property and may further be black.

The imaging lens assembly 100 of the present disclosure provides a lightblocking manner designed on the optical lens element 130. That is, thelight-shielding layer 170 is configured to retain or fixedly dispose thelight blocking sheet 160 on a corresponding structure of the opticallens element 130 (the annular side wall 135 and the flat abuttingsection 139 thereof specifically). A light being closer to the opticalaxis z than an inner opening of the light-shielding layer 170 thereto isblocked by the light blocking sheet 160, and a light being farther fromthe optical axis z than the annular abutting surface 165 of the lightblocking sheet 160 therefrom is blocked by the light-shielding layer170. Thus, the light-shielding layer 170 extends to form a lightblocking range that the light blocking sheet 160 cannot reach so as tosubstitute for the light blocking sheet 160. Specifically, thelight-shielding layer 170 is connected to the light blocking sheet 160and the minimum opening 118 of the plastic barrel 110. Each of the lightblocking sheet 160 fixedly disposed on an ideal light blocking positionby the light-shielding layer 170 and the optical lens element 130 coatedby the light-shielding layer 170 merely can define the entrance pupil ofthe imaging lens assembly 100. However, the optical lens element 130coated by the light-shielding layer 170 merely may results in a lightreflection problem on an inner opening surface of the light-shieldinglayer 170. The light blocking sheet 160 attached to the optical lenselement 130 by the light-shielding layer 170 is favorable for moreeasily controlling the surface property of the central opening 168 ofthe light blocking sheet 160 by improving manufacturing process, so asto mitigate the light reflection problem of the inner opening surfaceand enhance the effects of blocking stray light of the imaging lensassembly 100. Moreover, the light blocking sheet 160 retained or fixedlydisposed correspondingly to the optical lens element 130 by thelight-shielding layer 170 is advantageous in limiting the movable amountin the direction parallel to the optical axis z of the light blockingsheet 160. In addition, the peripheral portion 140 of the optical lenselement 130 with the designed structural type itself or forming an airgap 190 with the plastic barrel 110 is favorable for accumulating thelight-shielding layer 170 by capillary action, and further increasingthe optical density of the light-shielding layer 170.

Furthermore, in another embodiment according to the present disclosure(not shown in drawings), an optical element set may include at least twooptical lens elements, at least two light blocking sheets and at leasttwo light-shielding layers. An annular abutting surface of each of thelight blocking sheets and an annular side wall of a corresponding onethe optical lens elements are disposed correspondingly to each other.Each of the light-shielding layers surrounds a central opening of acorresponding one of the light blocking sheets and includes an annularconcave-curved portion. Each of the light-shielding layers extends froma peripheral portion of a corresponding one of the optical lens elementstowards an outer diameter surface of the corresponding one of theoptical lens elements. Moreover, each of an object-side peripheralsurface and an image-side peripheral surface of an optical lens elementof an optical element set may include an annular side wall. The opticalelement set further includes two light blocking sheets and twolight-shielding layers. An annular abutting surface of each of the lightblocking sheets and the annular side wall of a corresponding one of theobject-side peripheral surface and the image-side peripheral surface aredisposed correspondingly to each other. Each of the light-shieldinglayers is disposed correspondingly to the object-side peripheral surfaceor the image-side peripheral surface. Each of the light-shielding layerssurrounds a central opening of a corresponding one of the light blockingsheets and includes an annular concave-curved portion. Each of thelight-shielding layers extends from a corresponding one of theobject-side peripheral surface and the image-side peripheral surfacetowards an outer diameter surface of the optical lens element.

In FIG. 1B to FIG. 1D, the plastic barrel 110 may include the minimumopening 118. When a maximum diameter of the light-shielding layer 170 isψH, a maximum diameter of the annular abutting surface 165 is ψSd, and aminimum diameter of the central opening surface 167 is ψSa, thefollowing condition may be satisfied: 0.03<(ψH−ψSd)/(ψSd−ψSa)<6.0.Therefore, the peripheral portion 140 of the optical lens element 130with the designed structural type or assembled with the plastic barrel110 to form the air gap 190, which accommodates the light-shieldinglayer 170 is favorable for blocking light, retaining or fixedlydisposing an optical element (e.g., the optical lens element 130),increasing the optical density of the light-shielding layer 170,enhancing the effects of blocking stray light on a non-optical-effectiveportion (i.e., the peripheral portion 140) of the optical lens element130, and thereby maintaining a clear image. The light-shielding layer170 is advantageous in extending the light blocking range for the lightblocking sheet 160 and more adapting the specific spatial structureamong the optical elements than the light blocking sheet 160. Theimaging lens assembly 100 according to the present disclosure canfixedly dispose the light blocking sheet 160 in the ideally lightblocking position without designing fitting structures among the opticallens elements. In addition, the imaging lens assembly 100 is featuredwith a light blocking design of a front end (i.e., the object side za)of a telephoto lens assembly, and the plastic barrel 110 thereof isfeatured with a barrel design of a small object end (i.e., the objectside za).

Furthermore, the following condition may be satisfied by the imaginglens assembly 100 of the 1st embodiment: 1.0<(ψH−ψSd)/(ψSd−ψSa)<5.0.Therefore, the light blocking range can extend from the light blockingsheet 160 to more regions, which are more away from the optical axis zand not easily implemented by the light blocking sheet 160, so as toprovide a more ideal design to block the unnecessary light. Moreover, aroundness of the central opening 168 of the light blocking sheet 160 cancompensate the optical shortages of the light reflection problem of theinner opening surface of the light-shielding layer 170, so that thesurface optical property of light reflection of the light-shieldinglayer 170 can be controlled and improved by a manufacturing process ofthe central opening 168 of the light blocking sheet 160.

The embodiments according to the present disclosure, the parameter ψH isa largest one among all diameters passing through the optical axis z ofthe light-shielding layer 170 especially while the light-shielding layer170 having a non-circular outer circumference. The parameter ψSd is alargest one among all diameters passing through the optical axis z ofthe annular abutting surface 165 especially while the annular abuttingsurface 165 being in a non-circular annular shape. The parameter ψSa isa smallest one among all diameters passing through the optical axis z ofthe central opening surface 167 especially while the central openingsurface 167 being in a non-circular annular shape. In addition, as shownin FIG. 1B, the parameter “(ψH−ψSd)/2” is a distance along the directionvertical to the optical axis z corresponding to the maximum diameterbetween the annular abutting surface 165 and the light-shielding layer170. The parameter “(ψSd−ψSa)/2” is a width along the direction verticalto the optical axis z of the light blocking sheet 160.

In FIG. 1A to FIG. 1D, the plastic barrel 110 may include a maximumopening 119. When a length along the direction parallel to the opticalaxis z of the light-shielding layer 170 is L, and a length along thedirection parallel to the optical axis z of the plastic barrel 110 isLb, the following condition may be satisfied: 0.0<L/Lb<0.5. Furthermore,the following condition may be satisfied: 0.1<L/Lb<0.4. Therefore, aproper coating range of the light-shielding layer 170 results in highermanufacturing and assembling yield rates.

In detail, when the maximum diameter of the light-shielding layer 170 isLIM, the maximum diameter of the annular abutting surface 165 is ψSd,and the minimum diameter of the central opening surface 167 is ψSa, thefollowing condition may be satisfied: 0.1<[ψH/(ψSd−ψSa)]/π²<5.0.Therefore, a proper coating range of the light-shielding layer 170 isadvantageous in increasing the stray light blocking effects.

In FIG. 1A to FIG. 1H, the annular abutting surface 165 of the lightblocking sheet 160 and the annular side wall 135 of the optical lenselement 130 may be assembled correspondingly to each other to be alignedwith the optical axis z. Therefore, it is favorable for increasing theyield rate of assembling the optical lens element 130 and the lightblocking sheet 160 so as to more control the position offset degrees ofthe light blocking sheet 160. Specifically, at least one portion of theannular side wall 135 of the optical lens element 130 is connected orphysically contacts the annular abutting surface 165 so as toaccommodate the light blocking sheet 160. A position in the directionvertical to the optical axis z and the moveable amount of the lightblocking sheet 160 can be defined by the annular side wall 135 of theoptical lens element 130.

The annular concave-curved portion 174 of the light-shielding layer 170may be recessed towards the annular abutting surface 165 of the lightblocking sheet 160. Therefore, it is favorable for retaining or fixedlydisposing the light blocking sheet 160 by the light-shielding layer 170.

In FIG. 1D, when a minimum diameter of the annular side wall 135 is ψWd,and the maximum diameter of the annular abutting surface 165 is ψSd, thefollowing condition may be satisfied: 0.0 mm≤ψWd−ψSd<0.04 mm. Therefore,a proper diameter range of the annular side wall 135 is advantageous inmore controlling the position offset degrees of the light blocking sheet160 after being assembled. Furthermore, the following condition may besatisfied: 0.005 mm<ψWd−ψSd<0.03 mm. In the 1st embodiment, a value ofthe parameter ψWd and a value of the parameter ψSd are the same in anengineering design phase. In addition, a cooperated air spacing betweenthe annular side wall 135 and the annular abutting surface 165 can befine-tuned in accordance with the tolerances of the parameters ψWd andψSd. That is, a value of “ψWd−ψSd” is not equal to zero.

In FIG. 1A to FIG. 1H, the surface of the object-side peripheral surface141 and the image-side peripheral surface 142 of the peripheral portion140 (i.e., the object-side peripheral surface 141) may further include aflat abutting section 139 and an annular groove structure 137. The flatabutting section 139 extends along the direction vertical to the opticalaxis z, and a normal direction of the flat abutting section 139 is thedirection parallel to the optical axis z, specifically. The flatabutting section 139 is located closer to the effective optical portion149 than the annular side wall 135 thereto. The flat abutting section139 and the light blocking sheet 160 are in physical contact. Theannular groove structure 137 is in a full-circle form. The annulargroove structure 137 is connected between the annular side wall 135 andthe flat abutting section 139. The annular groove structure 137 islocated farther from the effective optical portion 149 than the flatabutting section 139 therefrom. The annular groove structure 137 isrecessed from the surface of the object-side peripheral surface 141 andthe image-side peripheral surface 142 (i.e., the object-side peripheralsurface 141) towards the other surface thereof (i.e., the image-sideperipheral surface 142) to form an accommodating space 138. At least oneportion of the light-shielding layer 170 is configured in theaccommodating space 138. Therefore, the flat abutting section 139 isadvantageous in effectively controlling the actual position of the lightblocking sheet 160 configured in the imaging lens assembly 100 so as toenhance the optical quality of the imaging lens assembly 100. Theannular groove structure 137 is beneficial to prevent thelight-shielding layer 170 from overflowing to an optical elementadjacent thereto while the light-shielding layer 170 being overdispensed. Furthermore, the flat abutting section 139 is configured foradjusting the match degrees between the annular abutting surface 165 ofthe light blocking sheet 160 and the annular side wall 135 of theoptical lens element 130, which are located correspondingly to eachother. The annular groove structure 137 provides an accumulating spacefor the light-shielding layer 170 so as to receive an excessive portionof the light-shielding layer 170 and increase the attachment abilitybetween the light blocking sheet 160 and the flat abutting section 139.In the 1st embodiment, the object-side peripheral surface 141 includesthe flat abutting section 139, the annular groove structure 137 and theannular side wall 135, in order from the center to the periphery of theoptical lens element 130.

In FIG. 1A, the annular side wall 135 of the optical lens element 130and the annular abutting surface 165 of the light blocking sheet 160 maybe overlapped along the direction vertical to the optical axis z. Theplastic barrel 110 and at least one portion of the light-shielding layer170 may not be overlapped along the direction parallel to the opticalaxis z. Therefore, the structural type of the optical lens element 130cannot be spatially limited by the structure of the plastic barrel 110.In the 1st embodiment, the annular side wall 135 of the optical lenselement 130 and the annular abutting surface 165 of the light blockingsheet 160 are overlapped along the direction vertical to the opticalaxis z. Specifically, a distance between a position closest to the imagesurface 106 of the annular side wall 135 and the image surface 106 isthe same as or similar to a distance between a position closest to theimage surface 106 of the annular abutting surface 165 and the imagesurface 106. Further in the 1st embodiment, the plastic barrel 110 andat least one portion of the light-shielding layer 170 (i.e., a portionof the light-shielding layer 170 that is located closer to the opticalaxis z than the minimum opening 118 thereto) are not overlapped alongthe direction parallel to the optical axis z. Specifically, the portionof the light-shielding layer 170 that is located closer to the opticalaxis z than the minimum opening 118 thereto is protruded towards theoptical axis z and away from the minimum opening 118, so that thelight-shielding layer 170 can extend to form the light blocking range tosubstitute for the light blocking sheet 160.

At least one optical element of the optical element set 120 (e.g., theoptical lens elements 130, 122, 123, 124, 125 and 126) may be disposedin the plastic barrel 110, and any optical element of the opticalelement set 120 is connected to or physically contacts at least one ofthe plastic barrel 110 and another optical element thereof. Thelight-shielding layer 170 is for retaining the optical lens element 130in the plastic barrel 110. In the enlarged view of FIG. 1A, thelight-shielding layer 170 in the 1st embodiment is interposed betweenthe plastic barrel 110 and the peripheral portion 140 of the opticallens element 130 (the object-side peripheral surface 141, specifically).The plastic barrel 110, the light-shielding layer 170 and the peripheralportion 140 of the optical lens element 130 are arranged and stackedalong the direction parallel to the optical axis z in order from theobject side za to the image side zb. The light-shielding layer 170 isfor retaining the light blocking sheet 160 with the optical lens element130, and for retaining the optical lens element 130 in the plasticbarrel 110. The light blocking sheet 160 is retained with the opticallens element 130, which is closest to the object side za of the opticalelement set 120, by the light-shielding layer 170, so that the lightblocking sheet 160 can determine the light beam width incident into theimaging lens assembly 100.

In FIG. 1A to FIG. 1C, at least one portion of the light-shielding layer170 may be connected to the minimum opening 118 of the plastic barrel110. Therefore, the cooperation between the light-shielding layer 170with the flow property of the capillary action and the minimum opening118 of the plastic barrel 110 is favorable for enlarging the extensionrange of the light-shielding layer 170 so as to add a light blockingeffect under the ordinary coating procedure.

The air gap 190 may be formed between the peripheral portion 140 of theoptical lens element 130 (the object-side peripheral surface 141,specifically) and the plastic barrel 110, and at least one portion ofthe light-shielding layer 170 is configured in the air gap 190.Therefore, the air gap 190 has two effects, which are accommodating thelight-shielding layer 170 and increasing the attachment ability of thelight-shielding layer 170. In the 1st embodiment, the light-shieldinglayer 170 is filled in the air gap 190 and annularly surrounds theoptical lens element 130 so as to retain the optical lens element 130 ofthe optical element set 120 in the plastic barrel 110.

In an assembling procedure of the imaging lens assembly 100, as shown inFIG. 1D, after the light blocking sheet 160 (with an assemblingdirection a160), the optical lens element 130 (with an assemblingdirection a130) and the plastic barrel 110 are allocated at therespective assembling positions, the light blocking sheet 160, theoptical lens element 130 and the plastic barrel 110 are connected withthe light-shielding layer 170 in the liquid state, the light-shieldinglayer 170 in the liquid state flows into the accommodating space 138 viathe air spacing, which is predetermined or resulted from the assemblingtolerances between the annular side wall 135 of the optical lens element130 and the annular abutting surface 165 of the light blocking sheet160, and thereby at least one portion of the light-shielding layer 170is configured in the accommodating space 138. Next, the light-shieldinglayer 170 after curing is configured to retain or fixedly dispose thelight blocking sheet 160 with the optical lens element 130, and toretain or fixedly dispose the optical lens element 130 in the plasticbarrel 110. Furthermore, other assembling details for the opticalelements of the optical element set 120 are omitted herein, and theassembling manners of the imaging lens assembly 100 of the 1stembodiment are not limited by the statements in this paragraph.

In FIG. 1A and FIG. 1B, a portion of the light-shielding layer 170(e.g., a portion of the light-shielding layer 170 located on the objectside za with respect to the light blocking sheet 160) and anotherportion of the light-shielding layer 170 (e.g., a portion of thelight-shielding layer 170 located on the image side zb with respect tothe light blocking sheet 160) are overlapped along the directionparallel to the optical axis z. Specifically, the portion of thelight-shielding layer 170 and the another portion thereof aforementionedin this paragraph cover a portion of the light blocking sheet 160 thatis located away from the optical axis z.

Moreover, at least one portion of the light-shielding layer 170 (e.g.,two portions of the light-shielding layer 170 respectively located onthe object side za and the image side zb with respect to the lightblocking sheet 160) and another portion of the light-shielding layer 170(e.g., a portion of the light-shielding layer 170 located farther fromthe optical axis z than the light blocking sheet 160 therefrom) areoverlapped along the direction vertical to the optical axis z.Specifically, the two portions of the light-shielding layer 170 and theanother portion thereof aforementioned in this paragraph cover a portionof the peripheral portion 140 that is located close to the object sideza.

The data of the aforementioned parameters of the imaging lens assembly100 according to the 1st embodiment of the present disclosure are listedin the following Table 1, and the parameters are also shown in FIG. 1Band FIG. 1D.

TABLE 1 1st Embodiment ψSa (mm) 1.45 Lb (mm) 3.12 ψSd (mm) 1.85 (ψH −ψSd)/(ψSd − ψSa) 1.1 ψWd (mm) 1.85 [ψH/(ψSd − ψSa)]/π² 0.58 ψH (mm) 2.29ψWd − ψSd (mm) 0 L (mm) 0.69 L/Lb 0.22

2nd Embodiment

FIG. 2A is a schematic view of an imaging lens assembly 200 according tothe 2nd embodiment of the present disclosure and an image sensor 207,and FIG. 2A is a cross-sectional view along a plane, on which an opticalaxis z is located, of the imaging lens assembly 200. FIG. 2B is aparameter schematic view of part 2B in FIG. 2A. FIG. 2C is an explodedview of a plastic barrel 210, an optical lens element 230, a lightblocking sheet 260 and a light-shielding layer 270 of the imaging lensassembly 200 according to FIG. 2A. FIG. 2D is a parameter schematic viewof the imaging lens assembly 200 according to the 2nd embodiment. InFIG. 2A to FIG. 2D, the imaging lens assembly 200 includes the plasticbarrel 210 and an optical element set 220. The optical element set 220includes the optical lens element 230, the light blocking sheet 260 andthe light-shielding layer 270. Furthermore, the optical element set 220includes a plurality of optical elements. Specifically, the opticalelement set 220 includes the optical lens element 230 and at least oneanother optical lens element (not specifically shown in drawings). Theoptical lens element 230 is an optical lens element closest to an objectside za of the optical element set 220. The optical element set 220 alsoincludes the light blocking sheet 260, the light-shielding layer 270, alight blocking sheet 282 and a retainer 284. All optical elements of theoptical element set 220 are disposed in the plastic barrel 210.Moreover, the imaging lens assembly 200 can be applicable to a cameramodule (not shown in drawings) of an electronic device (not shown indrawings). The image sensor 207 of the electronic device is disposed onan image surface 206.

FIG. 2E is a three-dimensional and cross-sectional view of the plasticbarrel 210, the optical lens element 230, the light blocking sheet 260and the light-shielding layer 270 of the imaging lens assembly 200according to the 2nd embodiment. FIG. 2F is an exploded view accordingto FIG. 2E. FIG. 2G is another three-dimensional and cross-sectionalview of the plastic barrel 210, the optical lens element 230, the lightblocking sheet 260 and the light-shielding layer 270 of the imaging lensassembly 200 according to the 2nd embodiment. FIG. 2H is an explodedview according to FIG. 2G. Furthermore, each of the plastic barrel 210,the light blocking sheet 260 and the light-shielding layer 270 issubstantially in a closed and circularly annular shape. The optical lenselement 230 is substantially in a circular plate shape with at least oneof a convex surface and a concave surface. Each of FIG. 2E to FIG. 2Hillustrates three-dimensional and cross-sectional view of twocross-sectional planes, which are vertical to each other and intersectat the optical axis z. The light blocking sheet 260 and thelight-shielding layer 270 in FIG. 2A to FIG. 2H may be respectivelymarked with backslash lines and dots to clearly show the imaging lensassembly 200 according to the 2nd embodiment of the present disclosure.In FIG. 2A to FIG. 2H, the optical lens element 230 includes aneffective optical portion 249 and a peripheral portion 240 in order froma center to a periphery thereof. The optical axis z of the imaging lensassembly 200 passes through the effective optical portion 249. Theperipheral portion 240 surrounds and is connected to the effectiveoptical portion 249. The peripheral portion 240 includes an object-sideperipheral surface 241 and an image-side peripheral surface 242. Theobject-side peripheral surface 241 faces towards the object side za. Theimage-side peripheral surface 242 faces towards the image side zb. Theobject-side peripheral surface 241 includes an annular side wall 235,which is in a full-circle form and extends along a direction parallel tothe optical axis z.

The light blocking sheet 260 includes an object-side surface 261, animage-side surface 262, an annular abutting surface 265 and a centralopening surface 267. The object-side surface 261 faces towards theobject side za. The image-side surface 262 faces towards the image sidezb. That is, the image-side surface 262 is located opposite to theobject-side surface 261. The annular abutting surface 265 is connectedbetween the object-side surface 261 and the image-side surface 262. Theannular abutting surface 265 and the annular side wall 235 of theoptical lens element 230 are disposed correspondingly to each other. Thecentral opening surface 267 surrounds and forms a central opening 268 ofthe light blocking sheet 260. The central opening surface 267 isconnected between the object-side surface 261 and the image-side surface262. The central opening surface 267 is located closer to the opticalaxis z than the annular abutting surface 265 thereto. In the 2ndembodiment, the image-side surface 262 of the light blocking sheet 260and the object-side peripheral surface 241 of the optical lens element230 are in physical contact.

In FIG. 2A to FIG. 2H, the light-shielding layer 270 surrounds thecentral opening 268 of the light blocking sheet 260 and includes anannular concave-curved portion 274. The annular concave-curved portion274 is in an annular shape being concave-curved. The light-shieldinglayer 270 extends from the peripheral portion 240 of the optical lenselement 230 towards an outer diameter surface 243 of the optical lenselement 230. The outer diameter surface 243 is connected between theobject-side peripheral surface 241 and the image-side peripheral surface242. The annular concave-curved portion 274 is for retaining or fixedlydisposing the light blocking sheet 260, so that there is no relativedisplacement in the direction parallel to the optical axis z between theannular abutting surface 265 of the light blocking sheet 260 and theannular side wall 235 of the optical lens element 230. In the 2ndembodiment, the light-shielding layer 270 is connected to theobject-side peripheral surface 241 of the optical lens element 230. Thelight-shielding layer 270 extends towards the outer diameter surface 243of the peripheral portion 240 along the object-side peripheral surface241. The light-shielding layer 270 is not connected to the outerdiameter surface 243. The annular concave-curved portion 274 of thelight-shielding layer 270 is connected to or disposed adjacent to theannular side wall 235 and is connected to the object-side surface 261 ofthe light blocking sheet 260.

In the 2nd embodiment, a light being closer to the optical axis z thanan inner opening of the light-shielding layer 270 thereto is blocked bythe light blocking sheet 260, and a light being farther from the opticalaxis z than the annular abutting surface 265 of the light blocking sheet260 therefrom is blocked by the light-shielding layer 270. Thus, thelight-shielding layer 270 extends to form a light blocking range thatthe light blocking sheet 260 cannot reach so as to substitute for thelight blocking sheet 260. Specifically, the light-shielding layer 270 isconnected to the light blocking sheet 260 and the plastic barrel 210.The light blocking sheet 260 is attached to the optical lens element 230by the light-shielding layer 270.

In FIG. 2A to FIG. 2H, the plastic barrel 210 includes a minimum opening218 and a maximum opening 219. The annular abutting surface 265 of thelight blocking sheet 260 and the annular side wall 235 of the opticallens element 230 are assembled correspondingly to each other to bealigned with the optical axis z. The annular concave-curved portion 274of the light-shielding layer 270 is recessed towards the annularabutting surface 265 of the light blocking sheet 260.

The object-side peripheral surface 241 of the peripheral portion 240further includes a flat abutting section 239. The flat abutting section239 extends along a direction vertical to the optical axis z, and anormal direction of the flat abutting section 239 is the directionparallel to the optical axis z, specifically. The flat abutting section239 is located closer to the effective optical portion 249 than theannular side wall 235 thereto. The flat abutting section 239 and theimage-side surface 262 of the light blocking sheet 260 are in physicalcontact.

In FIG. 2A, the annular side wall 235 of the optical lens element 230and the annular abutting surface 265 of the light blocking sheet 260 areoverlapped along the direction vertical to the optical axis z.Specifically, a distance between a position closest to the image surface206 of the annular side wall 235 and the image surface 206 is the sameas or similar to a distance between a position closest to the imagesurface 206 of the annular abutting surface 265 and the image surface206. The plastic barrel 210 and at least one portion of thelight-shielding layer 270 (i.e., a portion of the light-shielding layer270 that is located closer to the optical axis z than the minimumopening 218 thereto) are not overlapped along the direction parallel tothe optical axis z. Specifically, the portion of the light-shieldinglayer 270 that is located closer to the optical axis z than the minimumopening 218 thereto is protruded towards the optical axis z and awayfrom the minimum opening 218, so that the light-shielding layer 270 canextend to form the light blocking range to substitute for the lightblocking sheet 260.

All optical elements of the optical element set 220 are disposed in theplastic barrel 210, and any optical element of the optical element set220 is connected to or physically contacts at least one of the plasticbarrel 210 and another optical element thereof. The light-shieldinglayer 270 is for retaining the optical lens element 230 in the plasticbarrel 210. In the enlarged view of FIG. 2A, the light-shielding layer270 in the 2nd embodiment is interposed between the plastic barrel 210and the peripheral portion 240 of the optical lens element 230 (theobject-side peripheral surface 241, specifically). The plastic barrel210, the light-shielding layer 270 and the peripheral portion 240 of theoptical lens element 230 are arranged and stacked along the directionparallel to the optical axis z in order from the object side za to theimage side zb. The light-shielding layer 270 is for retaining the lightblocking sheet 260 with the optical lens element 230, and for retainingthe optical lens element 230 in the plastic barrel 210. The lightblocking sheet 260 is retained with the optical lens element 230, whichis closest to the object side za of the optical element set 220, by thelight-shielding layer 270, so that the light blocking sheet 260 candetermine the light beam width incident into the imaging lens assembly200.

In FIG. 2A to FIG. 2H, an air gap 290 is formed between the peripheralportion 240 of the optical lens element 230 (the object-side peripheralsurface 241, specifically) and the plastic barrel 210, and at least oneportion of the light-shielding layer 270 is configured in the air gap290.

In an assembling procedure of the imaging lens assembly 200, as shown inFIG. 2D, after the light blocking sheet 260 (with an assemblingdirection a260), the optical lens element 230 (with an assemblingdirection a230) and the plastic barrel 210 are allocated at therespective assembling positions, the light blocking sheet 260, theoptical lens element 230 and the plastic barrel 210 are connected withthe light-shielding layer 270 in the liquid state. Next, thelight-shielding layer 270 after curing is configured to retain orfixedly dispose the light blocking sheet 260 with the optical lenselement 230, and to retain or fixedly dispose the optical lens element230 in the plastic barrel 210. Furthermore, other assembling details forthe optical elements of the optical element set 220 are omitted herein,and the assembling manners of the imaging lens assembly 200 of the 2ndembodiment are not limited by the statements in this paragraph.

In FIG. 2A and FIG. 2B, a portion of the light-shielding layer 270(e.g., a portion of the light-shielding layer 270 located on the objectside za with respect to the light blocking sheet 260) and anotherportion of the light-shielding layer 270 (e.g., a portion of thelight-shielding layer 270 located farther from the optical axis z thanthe light blocking sheet 260 therefrom) are overlapped along thedirection vertical to the optical axis z. Specifically, the portion ofthe light-shielding layer 270 and the another portion thereofaforementioned in this paragraph cover a portion of the peripheralportion 240 that is located close to the object side za.

The data of the parameters of the imaging lens assembly 200 according tothe 2nd embodiment of the present disclosure are listed in the followingTable 2, and the parameters are also shown as FIG. 2B and FIG. 2D. Thedefinitions of these parameters shown in Table 2 are the same as thosestated in the imaging lens assembly 100 according to the 1st embodiment.

TABLE 2 2nd Embodiment ψSa (mm) 2.62 Lb (mm) 4.715 ψSd (mm) 3.11 (ψH −ψSd)/(ψSd − ψSa) 2.2 ψWd (mm) 3.11 [ψH/(ψSd − ψSa)]/π² 0.87 ψH (mm) 4.22ψWd − ψSd (mm) 0 L (mm) 0.1 L/Lb 0.02

3rd Embodiment

FIG. 3A is a schematic view of an imaging lens assembly 300 according tothe 3rd embodiment of the present disclosure and an image sensor 307,and FIG. 3A is a cross-sectional view along a plane, on which an opticalaxis z is located, of the imaging lens assembly 300. FIG. 3B is aparameter schematic view of part 3B in FIG. 3A. FIG. 3C is an explodedview of a plastic barrel 310, an optical lens element 330, a lightblocking sheet 360, a light-shielding layer 370 and a spacer 383 of theimaging lens assembly 300 according to FIG. 3A. FIG. 3D is a parameterschematic view of the imaging lens assembly 300 according to the 3rdembodiment. In FIG. 3A to FIG. 3D, the imaging lens assembly 300includes the plastic barrel 310 and an optical element set 320. Theoptical element set 320 includes the optical lens element 330, the lightblocking sheet 360 and the light-shielding layer 370. Furthermore, theoptical element set 320 includes a plurality of optical elements.Specifically, the optical element set 320 includes optical lens elements321, 322, 323, 324, 330 and 326 in order from an object side za to animage side zb, and also includes the light blocking sheet 360, thelight-shielding layer 370, at least one light blocking sheet 382, thespacer 383 and a retainer 384. All optical elements of the opticalelement set 320 are disposed in the plastic barrel 310. Moreover, theimaging lens assembly 300 can be applicable to a camera module (notshown in drawings) of an electronic device (not shown in drawings). Theimage sensor 307 of the electronic device is disposed on an imagesurface 306.

FIG. 3E is a three-dimensional and cross-sectional view of the plasticbarrel 310, the optical lens element 330, the light blocking sheet 360,the light-shielding layer 370 and the spacer 383 of the imaging lensassembly 300 according to the 3rd embodiment. FIG. 3F is anotherthree-dimensional and cross-sectional view of the plastic barrel 310,the optical lens element 330, the light blocking sheet 360, thelight-shielding layer 370 and the spacer 383 of the imaging lensassembly 300 according to the 3rd embodiment. FIG. 3G is an explodedview according to FIG. 3F. Furthermore, each of the plastic barrel 310,the light blocking sheet 360, the light-shielding layer 370 and thespacer 383 is substantially in a closed and circularly annular shape.The optical lens element 330 is substantially in a circular plate shapewith at least one of a convex surface and a concave surface. Each ofFIG. 3E to FIG. 3G illustrates three-dimensional and cross-sectionalview of two cross-sectional planes, which are vertical to each other andintersect at the optical axis z. The light blocking sheet 360 and thelight-shielding layer 370 in FIG. 3A to FIG. 3G may be respectivelymarked with backslash lines and dots to clearly show the imaging lensassembly 300 according to the 3rd embodiment of the present disclosure.In FIG. 3A to FIG. 3G, the optical lens element 330 includes aneffective optical portion 349 and a peripheral portion 340 in order froma center to a periphery thereof. The optical axis z of the imaging lensassembly 300 passes through the effective optical portion 349. Theperipheral portion 340 surrounds and is connected to the effectiveoptical portion 349. The peripheral portion 340 includes an object-sideperipheral surface 341 and an image-side peripheral surface 342. Theobject-side peripheral surface 341 faces towards the object side za. Theimage-side peripheral surface 342 faces towards the image side zb. Theimage-side peripheral surface 342 includes an annular side wall 335,which is in a full-circle form and extends along a direction parallel tothe optical axis z.

The light blocking sheet 360 includes an object-side surface 361, animage-side surface 362, an annular abutting surface 365 and a centralopening surface 367. The object-side surface 361 faces towards theobject side za. The image-side surface 362 faces towards the image sidezb. That is, the image-side surface 362 is located opposite to theobject-side surface 361. The annular abutting surface 365 is connectedbetween the object-side surface 361 and the image-side surface 362. Theannular abutting surface 365 and the annular side wall 335 of theoptical lens element 330 are disposed correspondingly to each other. Thecentral opening surface 367 surrounds and forms a central opening 368 ofthe light blocking sheet 360. The central opening surface 367 isconnected between the object-side surface 361 and the image-side surface362. The central opening surface 367 is located closer to the opticalaxis z than the annular abutting surface 365 thereto. In the 3rdembodiment, the object-side surface 361 of the light blocking sheet 360and the image-side peripheral surface 342 of the optical lens element330 are in physical contact.

In FIG. 3A to FIG. 3G, the light-shielding layer 370 surrounds thecentral opening 368 of the light blocking sheet 360 and includes anannular concave-curved portion 374. The annular concave-curved portion374 is in an annular shape being concave-curved. The light-shieldinglayer 370 extends from the peripheral portion 340 of the optical lenselement 330 towards an outer diameter surface 343 of the optical lenselement 330. The outer diameter surface 343 is connected between theobject-side peripheral surface 341 and the image-side peripheral surface342. The annular concave-curved portion 374 is for retaining or fixedlydisposing the light blocking sheet 360, so that there is no relativedisplacement in the direction parallel to the optical axis z between theannular abutting surface 365 of the light blocking sheet 360 and theannular side wall 335 of the optical lens element 330. In the 3rdembodiment, the light-shielding layer 370 is connected to the image-sideperipheral surface 342 of the optical lens element 330. Thelight-shielding layer 370 extends towards the outer diameter surface 343of the peripheral portion 340 along the image-side peripheral surface342. The light-shielding layer 370 is not connected to the outerdiameter surface 343. The annular concave-curved portion 374 of thelight-shielding layer 370 is connected to or disposed adjacent to theannular side wall 335 and is connected to the image-side surface 362 ofthe light blocking sheet 360.

In the 3rd embodiment, a light being closer to the optical axis z thanan inner opening of the light-shielding layer 370 thereto is blocked bythe light blocking sheet 360, and a light being farther from the opticalaxis z than the annular abutting surface 365 of the light blocking sheet360 therefrom is blocked by the light-shielding layer 370. Thus, thelight-shielding layer 370 extends to form a light blocking range thatthe light blocking sheet 360 cannot reach so as to substitute for thelight blocking sheet 360. The light blocking sheet 360 is attached tothe optical lens element 330 by the light-shielding layer 370.

In FIG. 3A to FIG. 3G, the plastic barrel 310 includes a minimum opening318 and a maximum opening 319. The annular abutting surface 365 of thelight blocking sheet 360 and the annular side wall 335 of the opticallens element 330 are assembled correspondingly to each other to bealigned with the optical axis z. The annular concave-curved portion 374of the light-shielding layer 370 is recessed towards the annularabutting surface 365 of the light blocking sheet 360.

The image-side peripheral surface 342 of the peripheral portion 340further includes a flat abutting section 339 and an annular groovestructure 337. The flat abutting section 339 extends along a directionvertical to the optical axis z, and a normal direction of the flatabutting section 339 is the direction parallel to the optical axis z,specifically. The flat abutting section 339 is located closer to theeffective optical portion 349 than the annular side wall 335 thereto.The flat abutting section 339 and the object-side surface 361 of thelight blocking sheet 360 are in physical contact. The annular groovestructure 337 is in a full-circle form. The annular groove structure 337is connected between the annular side wall 335 and the flat abuttingsection 339. The annular groove structure 337 is located farther fromthe effective optical portion 349 than the flat abutting section 339therefrom. The annular groove structure 337 is recessed from theimage-side peripheral surface 342 towards the object-side peripheralsurface 341 to form an accommodating space 338. At least one portion ofthe light-shielding layer 370 is configured in the accommodating space338. Therefore, the annular groove structure 337 is beneficial toprevent the light-shielding layer 370 from overflowing to an opticalelement (e.g., the spacer 383) adjacent thereto while thelight-shielding layer 370 being over dispensed. In the 3rd embodiment,the image-side peripheral surface 342 includes the flat abutting section339, the annular groove structure 337 and the annular side wall 335, inorder from the center to the periphery of the optical lens element 330.

In FIG. 3A, the annular side wall 335 of the optical lens element 330and the annular abutting surface 365 of the light blocking sheet 360 areoverlapped along the direction vertical to the optical axis z.Specifically, a distance between a position closest to the image surface306 of the annular side wall 335 and the image surface 306 is the sameas or similar to a distance between a position closest to the imagesurface 306 of the annular abutting surface 365 and the image surface306.

All optical elements of the optical element set 320 are disposed in theplastic barrel 310, and any optical element of the optical element set320 is connected to or physically contacts at least one of the plasticbarrel 310 and another optical element thereof.

In an assembling procedure of the imaging lens assembly 300, as shown inFIG. 3D, after the light blocking sheet 360 (with an assemblingdirection a360), the optical lens element 330 (with an assemblingdirection a330), the spacer 383 (with an assembling direction a383) andthe plastic barrel 310 are allocated at the respective assemblingpositions, the light blocking sheet 360 and the optical lens element 330are connected with the light-shielding layer 370 in the liquid state,the light-shielding layer 370 in the liquid state flows into theaccommodating space 338 via an air spacing, which is predetermined orresulted from the assembling tolerances between the annular side wall335 of the optical lens element 330 and the annular abutting surface 365of the light blocking sheet 360, and thereby at least one portion of thelight-shielding layer 370 is configured in the accommodating space 338.Next, the light-shielding layer 370 after curing is configured to retainor fixedly dispose the light blocking sheet 360 with the optical lenselement 330. Furthermore, other assembling details for the opticalelements of the optical element set 320 are omitted herein, and theassembling manners of the imaging lens assembly 300 of the 3rdembodiment are not limited by the statements in this paragraph.

In FIG. 3A and FIG. 3B, a portion of the light-shielding layer 370(e.g., a portion of the light-shielding layer 370 located on the objectside za with respect to the light blocking sheet 360) and anotherportion of the light-shielding layer 370 (e.g., a portion of thelight-shielding layer 370 located on the image side zb with respect tothe light blocking sheet 360) are overlapped along the directionparallel to the optical axis z. Specifically, the portion of thelight-shielding layer 370 and the another portion thereof aforementionedin this paragraph cover a portion of the light blocking sheet 360 thatis located away from the optical axis z.

The data of the parameters of the imaging lens assembly 300 according tothe 3rd embodiment of the present disclosure are listed in the followingTable 3, and the parameters are also shown as FIG. 3B and FIG. 3D. Thedefinitions of these parameters shown in Table 3 are the same as thosestated in the imaging lens assembly 100 according to the 1st embodiment.

TABLE 3 3rd Embodiment ψSa (mm) 5.5 Lb (mm) 5.05 ψSd (mm) 6.42 (ψH −ψSd)/(ψSd − ψSa) 0.3 ψWd (mm) 6.42 [ψH/(ψSd − ψSa)]/π² 0.74 ψH (mm) 6.68ψWd − ψSd (mm) 0 L (mm) 0.07 L/Lb 0.01

4th Embodiment

FIG. 4A is a schematic view of an imaging lens assembly 400 according tothe 4th embodiment of the present disclosure and an image sensor 407,and FIG. 4A is a cross-sectional view along a plane, on which an opticalaxis z is located, of the imaging lens assembly 400. FIG. 4B is aparameter schematic view of part 4B in FIG. 4A. FIG. 4C is an explodedview of a plastic barrel 410, an optical lens element 430, a lightblocking sheet 460 and a light-shielding layer 470 of the imaging lensassembly 400 according to FIG. 4A. FIG. 4D is a parameter schematic viewof the imaging lens assembly 400 according to the 4th embodiment. InFIG. 4A to FIG. 4D, the imaging lens assembly 400 includes the plasticbarrel 410 and an optical element set 420. The optical element set 420includes the optical lens element 430, the light blocking sheet 460 andthe light-shielding layer 470. Furthermore, the optical element set 420includes a plurality of optical elements. Specifically, the opticalelement set 420 includes optical lens elements 421, 422, 423, 424, 425and 430 in order from an object side za to an image side zb, and alsoincludes the light blocking sheet 460, the light-shielding layer 470, atleast one light blocking sheet 482 and at least one spacer 483. Alloptical elements of the optical element set 420 are disposed in theplastic barrel 410. Moreover, the imaging lens assembly 400 can beapplicable to a camera module (not shown in drawings) of an electronicdevice (not shown in drawings). The image sensor 407 of the electronicdevice is disposed on an image surface 406.

FIG. 4E is a three-dimensional and cross-sectional view of the plasticbarrel 410, the optical lens element 430, the light blocking sheet 460and the light-shielding layer 470 of the imaging lens assembly 400according to the 4th embodiment. FIG. 4F is another three-dimensionaland cross-sectional view of the plastic barrel 410, the optical lenselement 430, the light blocking sheet 460 and the light-shielding layer470 of the imaging lens assembly 400 according to the 4th embodiment.FIG. 4G is an exploded view according to FIG. 4F. Furthermore, each ofthe plastic barrel 410, the light blocking sheet 460 and thelight-shielding layer 470 is substantially in a closed and circularlyannular shape. The optical lens element 430 is substantially in acircular plate shape with at least one of a convex surface and a concavesurface. Each of FIG. 4E to FIG. 4G illustrates three-dimensional andcross-sectional view of two cross-sectional planes, which are verticalto each other and intersect at the optical axis z. The light blockingsheet 460 and the light-shielding layer 470 in FIG. 4A to FIG. 4G may berespectively marked with backslash lines and dots to clearly show theimaging lens assembly 400 according to the 4th embodiment of the presentdisclosure. In FIG. 4A to FIG. 4G, the optical lens element 430 includesan effective optical portion 449 and a peripheral portion 440 in orderfrom a center to a periphery thereof. The optical axis z of the imaginglens assembly 400 passes through the effective optical portion 449. Theperipheral portion 440 surrounds and is connected to the effectiveoptical portion 449. The peripheral portion 440 includes an object-sideperipheral surface 441 and an image-side peripheral surface 442. Theobject-side peripheral surface 441 faces towards the object side za. Theimage-side peripheral surface 442 faces towards the image side zb. Theimage-side peripheral surface 442 includes an annular side wall 435,which is in a full-circle form and extends along a direction parallel tothe optical axis z.

The light blocking sheet 460 includes an object-side surface 461, animage-side surface 462, an annular abutting surface 465 and a centralopening surface 467. The object-side surface 461 faces towards theobject side za. The image-side surface 462 faces towards the image sidezb. That is, the image-side surface 462 is located opposite to theobject-side surface 461. The annular abutting surface 465 is connectedbetween the object-side surface 461 and the image-side surface 462. Theannular abutting surface 465 and the annular side wall 435 of theoptical lens element 430 are disposed correspondingly to each other. Thecentral opening surface 467 surrounds and forms a central opening 468 ofthe light blocking sheet 460. The central opening surface 467 isconnected between the object-side surface 461 and the image-side surface462. The central opening surface 467 is located closer to the opticalaxis z than the annular abutting surface 465 thereto. In the 4thembodiment, the object-side surface 461 of the light blocking sheet 460and the image-side peripheral surface 442 of the optical lens element430 are in physical contact.

In FIG. 4A to FIG. 4G, the light-shielding layer 470 surrounds thecentral opening 468 of the light blocking sheet 460 and includes anannular concave-curved portion 474. The annular concave-curved portion474 is in an annular shape being concave-curved. The light-shieldinglayer 470 extends from the peripheral portion 440 of the optical lenselement 430 towards an outer diameter surface 443 of the optical lenselement 430. The outer diameter surface 443 is connected between theobject-side peripheral surface 441 and the image-side peripheral surface442. The annular concave-curved portion 474 is for retaining or fixedlydisposing the light blocking sheet 460, so that there is no relativedisplacement in the direction parallel to the optical axis z between theannular abutting surface 465 of the light blocking sheet 460 and theannular side wall 435 of the optical lens element 430. In the 4thembodiment, the light-shielding layer 470 is connected to the image-sideperipheral surface 442 of the optical lens element 430. Thelight-shielding layer 470 extends towards the outer diameter surface 443of the peripheral portion 440 along the image-side peripheral surface442. The light-shielding layer 470 is not connected to the outerdiameter surface 443. The annular concave-curved portion 474 of thelight-shielding layer 470 is connected to or disposed adjacent to theannular side wall 435 and is connected to the image-side surface 462 ofthe light blocking sheet 460.

In the 4th embodiment, a light being closer to the optical axis z thanan inner opening of the light-shielding layer 470 thereto is blocked bythe light blocking sheet 460, and a light being farther from the opticalaxis z than the annular abutting surface 465 of the light blocking sheet460 therefrom is blocked by the light-shielding layer 470. Thus, thelight-shielding layer 470 extends to form a light blocking range thatthe light blocking sheet 460 cannot reach so as to substitute for thelight blocking sheet 460. Specifically, the light-shielding layer 470 isconnected to the light blocking sheet 460 and a maximum opening 419 ofthe plastic barrel 410. The light blocking sheet 460 is attached to theoptical lens element 430 by the light-shielding layer 470.

In FIG. 4A to FIG. 4D, the plastic barrel 410 includes a minimum opening418 and a maximum opening 419. When a length along the directionparallel to the optical axis z of the light-shielding layer 470 is L,and a length along the direction parallel to the optical axis z of theplastic barrel 410 is Lb, the following condition is satisfied:0.0<L/Lb<0.5. Specifically, the optical lens element 430 is an opticallens element closest to the image surface 406 of the optical element set420 and is disposed in the plastic barrel 410. The maximum opening 419is located at a position that is closest to the image surface 406 of theplastic barrel 410. The light-shielding layer 470 is connected to theimage-side peripheral surface 442 of the optical lens element 430 andthe plastic barrel 410. Therefore, the light-shielding layer 470 cansubstitute for a conventional retainer in a solid state with themechanical property so as to save the production cost. Thelight-shielding layer 470 with high-viscosity has the function of aretainer and is more proper to fill into a space of the specificstructural type than the conventional retainer in the solid state thatis made by an injection molding method, so as to increase the attachmentbetween the optical element set 420 and the plastic barrel 410.Furthermore, the following condition is satisfied: 0.1<L/Lb<0.4.Therefore, a proper coating range of the light-shielding layer 470 canresult in higher manufacturing and assembling yield rates.

In FIG. 4A to FIG. 4G, the annular abutting surface 465 of the lightblocking sheet 460 and the annular side wall 435 of the optical lenselement 430 are assembled correspondingly to each other to be alignedwith the optical axis z. The annular concave-curved portion 474 of thelight-shielding layer 470 is recessed towards the annular abuttingsurface 465 of the light blocking sheet 460.

The image-side peripheral surface 442 of the peripheral portion 440further includes a flat abutting section 439 and an annular groovestructure 437. The flat abutting section 439 extends along a directionvertical to the optical axis z, and a normal direction of the flatabutting section 439 is the direction parallel to the optical axis z,specifically. The flat abutting section 439 is located closer to theeffective optical portion 449 than the annular side wall 435 thereto.The flat abutting section 439 and the object-side surface 461 of thelight blocking sheet 460 are in physical contact. The annular groovestructure 437 is in a full-circle form. The annular groove structure 437is connected between the annular side wall 435 and the flat abuttingsection 439. The annular groove structure 437 is located farther fromthe effective optical portion 449 than the flat abutting section 439therefrom. The annular groove structure 437 is recessed from theimage-side peripheral surface 442 towards the object-side peripheralsurface 441 to form an accommodating space 438. At least one portion ofthe light-shielding layer 470 is configured in the accommodating space438. In the 4th embodiment, the image-side peripheral surface 442includes the flat abutting section 439, the annular groove structure 437and the annular side wall 435, in order from the center to the peripheryof the optical lens element 430.

In FIG. 4A, the annular side wall 435 of the optical lens element 430and the annular abutting surface 465 of the light blocking sheet 460 areoverlapped along the direction vertical to the optical axis z.Specifically, a distance between a position closest to the image surface406 of the annular side wall 435 and the image surface 406 is the sameas or similar to a distance between a position closest to the imagesurface 406 of the annular abutting surface 465 and the image surface406.

All optical elements of the optical element set 420 are disposed in theplastic barrel 410, and any optical element of the optical element set420 is connected to or physically contacts at least one of the plasticbarrel 410 and another optical element thereof. The light-shieldinglayer 470 is for retaining the optical lens element 430 in the plasticbarrel 410, and is further for retaining an entirety of the opticalelement set 420 in the plastic barrel 410. Therefore, thelight-shielding layer 470 after curing having the function of retainingor fixedly disposing the optical element set 420 can be deemed as aretainer in a liquid state for assembling the imaging lens assembly 400,and has a smaller size and a more ideal property of blocking stray lightthan the conventional retainer in the solid state. In the enlarged viewof FIG. 4A, the light-shielding layer 470 in the 4th embodiment isinterposed between the plastic barrel 410 and the peripheral portion 440of the optical lens element 430 (the image-side peripheral surface 442and the outer diameter surface 443, specifically). The light-shieldinglayer 470 is for retaining the light blocking sheet 460 with the opticallens element 430, and for retaining the optical lens element 430together with other optical elements of the optical element set 420 inthe plastic barrel 410.

In FIG. 4A to FIG. 4G, an air gap 490 is formed between the peripheralportion 440 of the optical lens element 430 (the outer diameter surface443, specifically) and the plastic barrel 410, and at least one portionof the light-shielding layer 470 is configured in the air gap 490.

The peripheral portion 440 of the optical lens element 430 includes agate trace 444. The gate trace 444 is located farther from the effectiveoptical portion 449 than the annular side wall 435 therefrom. Therefore,the gate trace 444 on the peripheral portion 440 is formed from cuttinga plastic injection material of the optical lens element 430 while theoptical lens element 430 being released from a mold, so that the annularside wall 435 can be prevented from damage by the cutting tool and canbe maintained in the full-circle form. The structural type of thefull-circle form is more advantageous in increasing the assemblingquality of the optical elements than the structural type of anon-full-circle form. Furthermore, the gate trace 444 is not connectedto the annular side wall 435 and does not physically contact the plasticbarrel 410. Specifically, the gate trace 444 is located on the outerdiameter surface 443, which is located farther from the effectiveoptical portion 449 than the annular side wall 435 therefrom.

At least one portion of the light-shielding layer 470 is located fartherfrom the effective optical portion 449 than the gate trace 444therefrom, and the light-shielding layer 470 covers and physicallycontacts the gate trace 444. Therefore, the structural type of thelight-shielding layer 470 more attached to the peripheral portion 440 ofthe optical lens element 430 is favorable for further increasing theeffects of blocking stray light of the imaging lens assembly 400.

In an assembling procedure of the imaging lens assembly 400, as shown inFIG. 4D, after the light blocking sheet 460 (with an assemblingdirection a460), the optical lens element 430 (with an assemblingdirection a430) and the plastic barrel 410 are allocated at therespective assembling positions, the light blocking sheet 460, theoptical lens element 430 and the plastic barrel 410 are connected withthe light-shielding layer 470 in the liquid state, the light-shieldinglayer 470 in the liquid state flows into the accommodating space 438 viaan air spacing, which is predetermined or resulted from the assemblingtolerances between the annular side wall 435 of the optical lens element430 and the annular abutting surface 465 of the light blocking sheet460, and thereby at least one portion of the light-shielding layer 470is configured in the accommodating space 438. Next, the light-shieldinglayer 470 after curing is configured to retain or fixedly dispose thelight blocking sheet 460 with the optical lens element 430 and to retainor fixedly dispose the optical lens element 430 together with otheroptical elements of the optical element set 420 in the plastic barrel410. Furthermore, other assembling details for the optical elements ofthe optical element set 420 are omitted herein, and the assemblingmanners of the imaging lens assembly 400 of the 4th embodiment are notlimited by the statements in this paragraph.

In FIG. 4A and FIG. 4B, a portion of the light-shielding layer 470(e.g., a portion of the light-shielding layer 470 located on the objectside za with respect to the gate trace 444) and another portion of thelight-shielding layer 470 (e.g., a portion of the light-shielding layer470 located on the image side zb with respect to the gate trace 444) areoverlapped along the direction parallel to the optical axis z.Specifically, the portion of the light-shielding layer 470 and theanother portion thereof aforementioned in this paragraph cover the gatetrace 444.

Moreover, a portion of the light-shielding layer 470 (e.g., a portion ofthe light-shielding layer 470 located on the image side zb with respectto the light blocking sheet 460) and another portion of thelight-shielding layer 470 (e.g., a portion of the light-shielding layer470 located on the image side zb with respect to the gate trace 444) areoverlapped along the direction vertical to the optical axis z.Specifically, the portion of the light-shielding layer 470 and theanother portion thereof aforementioned in this paragraph cover a portionof the peripheral portion 440 that is located close to the image sidezb.

The data of the parameters of the imaging lens assembly 400 according tothe 4th embodiment of the present disclosure are listed in the followingTable 4, and the parameters are also shown as FIG. 4B and FIG. 4D. Thedefinitions of these parameters shown in Table 4 are the same as thosestated in the imaging lens assembly 100 according to the 1st embodiment.

TABLE 4 4th Embodiment ψSa (mm) 4.75 Lb (mm) 3.57 ψSd (mm) 5.15 (ψH −ψSd)/(ψSd − ψSa) 1.1 ψWd (mm) 5.15 [ψH/(ψSd − ψSa)]/π² 1.42 ψH (mm) 5.6ψWd − ψSd (mm) 0 L (mm) 0.5 L/Lb 0.14

5th Embodiment

FIG. 5A is a schematic view of an imaging lens assembly 500 according tothe 5th embodiment of the present disclosure, and FIG. 5A is across-sectional view along a plane, on which an optical axis z islocated, of the imaging lens assembly 500. FIG. 5B is a parameterschematic view of part 5B in FIG. 5A. FIG. 5C is an exploded view of aplastic barrel 510, an optical lens element 530, a light blocking sheet560 and a light-shielding layer 570 of the imaging lens assembly 500according to FIG. 5A. FIG. 5D is a parameter schematic view of theimaging lens assembly 500 according to the 5th embodiment. In FIG. 5A toFIG. 5D, the imaging lens assembly 500 includes the plastic barrel 510and an optical element set 520. The optical element set 520 includes theoptical lens element 530, the light blocking sheet 560 and thelight-shielding layer 570. Furthermore, the optical element set 520includes a plurality of optical elements. Specifically, the opticalelement set 520 includes optical lens elements 530, 522 and 523 in orderfrom an object side za to an image side zb, and also includes the lightblocking sheet 560, the light-shielding layer 570 and a light blockingsheet 582. All optical elements of the optical element set 520 aredisposed in the plastic barrel 510.

FIG. 5E is a three-dimensional and cross-sectional view of the plasticbarrel 510, the optical lens element 530, the light blocking sheet 560and the light-shielding layer 570 of the imaging lens assembly 500according to the 5th embodiment. FIG. 5F is an exploded view accordingto FIG. 5E. FIG. 5G is another three-dimensional and cross-sectionalview of the plastic barrel 510, the optical lens element 530, the lightblocking sheet 560 and the light-shielding layer 570 of the imaging lensassembly 500 according to the 5th embodiment. Furthermore, each of theplastic barrel 510, the light blocking sheet 560 and the light-shieldinglayer 570 is substantially in a closed and circularly annular shape. Theoptical lens element 530 is substantially in a circular plate shape withat least one of a convex surface and a concave surface. Each of FIG. 5Eto FIG. 5G illustrates three-dimensional and cross-sectional view of twocross-sectional planes, which are vertical to each other and intersectat the optical axis z. The light blocking sheet 560 and thelight-shielding layer 570 in FIG. 5A to FIG. 5G may be respectivelymarked with backslash lines and dots to clearly show the imaging lensassembly 500 according to the 5th embodiment of the present disclosure.In FIG. 5A to FIG. 5G, the optical lens element 530 includes aneffective optical portion 549 and a peripheral portion 540 in order froma center to a periphery thereof. The optical axis z of the imaging lensassembly 500 passes through the effective optical portion 549. Theperipheral portion 540 surrounds and is connected to the effectiveoptical portion 549. The peripheral portion 540 includes an object-sideperipheral surface 541 and an image-side peripheral surface 542. Theobject-side peripheral surface 541 faces towards the object side za. Theimage-side peripheral surface 542 faces towards the image side zb. Theobject-side peripheral surface 541 includes an annular side wall 535,which is in a full-circle form and extends along a direction parallel tothe optical axis z.

The light blocking sheet 560 includes an object-side surface 561, animage-side surface 562, an annular abutting surface 565 and a centralopening surface 567. The object-side surface 561 faces towards theobject side za. The image-side surface 562 faces towards the image sidezb. That is, the image-side surface 562 is located opposite to theobject-side surface 561. The annular abutting surface 565 is connectedbetween the object-side surface 561 and the image-side surface 562. Theannular abutting surface 565 and the annular side wall 535 of theoptical lens element 530 are disposed correspondingly to each other. Thecentral opening surface 567 surrounds and forms a central opening 568 ofthe light blocking sheet 560. The central opening surface 567 isconnected between the object-side surface 561 and the image-side surface562. The central opening surface 567 is located closer to the opticalaxis z than the annular abutting surface 565 thereto. In the 5thembodiment, the image-side surface 562 of the light blocking sheet 560and the object-side peripheral surface 541 of the optical lens element530 are in physical contact.

In FIG. 5A to FIG. 5G, the light-shielding layer 570 surrounds thecentral opening 568 of the light blocking sheet 560 and includes anannular concave-curved portion 574. The annular concave-curved portion574 is in an annular shape being concave-curved. The light-shieldinglayer 570 extends from the peripheral portion 540 of the optical lenselement 530 towards an outer diameter surface 543 of the optical lenselement 530. The outer diameter surface 543 is connected between theobject-side peripheral surface 541 and the image-side peripheral surface542. The annular concave-curved portion 574 is for retaining or fixedlydisposing the light blocking sheet 560, so that there is no relativedisplacement in the direction parallel to the optical axis z between theannular abutting surface 565 of the light blocking sheet 560 and theannular side wall 535 of the optical lens element 530. In the 5thembodiment, the light-shielding layer 570 is connected to theobject-side peripheral surface 541 of the optical lens element 530. Thelight-shielding layer 570 extends towards the outer diameter surface 543of the peripheral portion 540 along the object-side peripheral surface541. The light-shielding layer 570 is connected to the outer diametersurface 543. The annular concave-curved portion 574 of thelight-shielding layer 570 is connected to or disposed adjacent to theannular side wall 535 and is connected to the object-side surface 561 ofthe light blocking sheet 560.

In the 5th embodiment, a light being closer to the optical axis z thanan inner opening of the light-shielding layer 570 thereto is blocked bythe light blocking sheet 560, and a light being farther from the opticalaxis z than the annular abutting surface 565 of the light blocking sheet560 therefrom is blocked by the light-shielding layer 570. Thus, thelight-shielding layer 570 extends to form a light blocking range thatthe light blocking sheet 560 cannot reach so as to substitute for thelight blocking sheet 560. Specifically, the light-shielding layer 570 isconnected to the light blocking sheet 560 and a maximum opening 519 ofthe plastic barrel 510. The light blocking sheet 560 is attached to theoptical lens element 530 by the light-shielding layer 570.

In FIG. 5A to FIG. 5D, the optical lens element 530 is an optical lenselement closest to the object side za of the optical element set 520 andis disposed in the plastic barrel 510. The plastic barrel 510 includes aminimum opening 518 and the maximum opening 519. The maximum opening 519is located at a position that is closest to the object side za of theplastic barrel 510. The light-shielding layer 570 is connected to theobject-side peripheral surface 541 of the optical lens element 530 andthe plastic barrel 510. Therefore, the light-shielding layer 570 cansubstitute for a conventional retainer in a solid state with themechanical property.

In FIG. 5A to FIG. 5G, the annular abutting surface 565 of the lightblocking sheet 560 and the annular side wall 535 of the optical lenselement 530 are assembled correspondingly to each other to be alignedwith the optical axis z. The annular concave-curved portion 574 of thelight-shielding layer 570 is recessed towards the annular abuttingsurface 565 of the light blocking sheet 560.

The object-side peripheral surface 541 of the peripheral portion 540further includes a flat abutting section 539. The flat abutting section539 extends along a direction vertical to the optical axis z, and anormal direction of the flat abutting section 539 is the directionparallel to the optical axis z, specifically. The flat abutting section539 is located closer to the effective optical portion 549 than theannular side wall 535 thereto. The flat abutting section 539 and theimage-side surface 562 of the light blocking sheet 560 are in physicalcontact.

In FIG. 5A, the annular side wall 535 of the optical lens element 530and the annular abutting surface 565 of the light blocking sheet 560 areoverlapped along the direction vertical to the optical axis z.Specifically, a distance between a position closest to an image surface(not shown in drawings) of the annular side wall 535 and the imagesurface is the same as or similar to a distance between a positionclosest to the image surface of the annular abutting surface 565 and theimage surface.

All optical elements of the optical element set 520 are disposed in theplastic barrel 510, and any optical element of the optical element set520 is connected to or physically contacts at least one of the plasticbarrel 510 and another optical element thereof. The light-shieldinglayer 570 is for retaining the optical lens element 530 in the plasticbarrel 510, and is further for retaining an entirety of the opticalelement set 520 in the plastic barrel 510. In the enlarged view of FIG.5A, the light-shielding layer 570 in the 5th embodiment is interposedbetween the plastic barrel 510 and the peripheral portion 540 of theoptical lens element 530 (the object-side peripheral surface 541 and theouter diameter surface 543, specifically). The light-shielding layer 570is for retaining the light blocking sheet 560 with the optical lenselement 530, and for retaining the optical lens element 530 togetherwith other optical elements of the optical element set 520 in theplastic barrel 510.

In FIG. 5A to FIG. 5G, an air gap 590 is formed between the peripheralportion 540 of the optical lens element 530 (the outer diameter surface543, specifically) and the plastic barrel 510, and at least one portionof the light-shielding layer 570 is configured in the air gap 590.

In an assembling procedure of the imaging lens assembly 500, as shown inFIG. 5D, after the light blocking sheet 560 (with an assemblingdirection a560), the optical lens element 530 (with an assemblingdirection a530) and the plastic barrel 510 are allocated at therespective assembling positions, the light blocking sheet 560, theoptical lens element 530 and the plastic barrel 510 are connected withthe light-shielding layer 570 in the liquid state. Next, thelight-shielding layer 570 after curing is configured to retain orfixedly dispose the light blocking sheet 560 with the optical lenselement 530, and to retain or fixedly dispose the optical lens element530 together with other optical elements of the optical element set 520in the plastic barrel 510. Furthermore, other assembling details for theoptical elements of the optical element set 520 are omitted herein, andthe assembling manners of the imaging lens assembly 500 of the 5thembodiment are not limited by the statements in this paragraph.

In FIG. 5A and FIG. 5B, a portion of the light-shielding layer 570(e.g., a portion of the light-shielding layer 570 located on the objectside za with respect to the light blocking sheet 560) and anotherportion of the light-shielding layer 570 (e.g., a portion of thelight-shielding layer 570 located farther from the optical axis z thanthe light blocking sheet 560 therefrom) are overlapped along thedirection vertical to the optical axis z. Specifically, the portion ofthe light-shielding layer 570 and the another portion thereofaforementioned in this paragraph cover a portion of the peripheralportion 540 that is located close to the object side za.

The data of the parameters of the imaging lens assembly 500 according tothe 5th embodiment of the present disclosure are listed in the followingTable 5, and the parameters are also shown as FIG. 5B and FIG. 5D. Thedefinitions of these parameters shown in Table 5 are the same as thosestated in the imaging lens assembly 100 according to the 1st embodiment.

TABLE 5 5th Embodiment ψSa (mm) 8.03 Lb (mm) 4.35 ψSd (mm) 8.83 (ψH −ψSd)/(ψSd − ψSa) 1.2 ψWd (mm) 8.83 [ψH/(ψSd − ψSa)]/π² 1.24 ψH (mm) 9.8ψWd − ψSd (mm) 0 L (mm) 0.34 L/Lb 0.08

6th Embodiment

FIG. 6A shows a schematic view of an electronic device 10 according tothe 6th embodiment of the present disclosure, FIG. 6B shows anotherschematic view of the electronic device 10 according to the 6thembodiment, and particularly, FIG. 6A and FIG. 6B are schematic viewsrelated to cameras of the electronic device 10. In FIG. 6A and FIG. 6B,the electronic device 10 of the 6th embodiment is a smart phone. Theelectronic device 10 includes a camera module 11 and an image sensor 13.The camera module 11 includes an imaging lens assembly 12 according tothe present disclosure. The imaging lens assembly 12 may be one of theaforementioned imaging lens assemblies 100, 200, 300, 400, 500 oranother imaging lens assembly according to the present disclosure. Theimage sensor 13 is disposed on an image surface (not shown in drawings)of the camera module 11. Therefore, a better image quality can beachieved, and hence the high-end imaging requirements of modernelectronic devices can be satisfied.

Furthermore, the user activates the capturing mode via a user interface19 of the electronic device 10, wherein the user interface 19 of the 6thembodiment can be a touch screen 19 a, a button 19 b, etc. At thismoment, the imaging light of the imaging lens assembly 12 is convergedon the image sensor 13, and the electronic signal associated with imageis output to an image signal processor (ISP) 18.

FIG. 6C shows a block diagram of the electronic device 10 according tothe 6th embodiment, and in particular, the block diagram is related tothe camera of the electronic device 10. In FIG. 6A to FIG. 6C, thecamera module 11 can further include an autofocus assembly 14 and anoptical anti-shake mechanism 15 based on the camera specification of theelectronic device 10. Moreover, the electronic device 10 can furtherinclude at least one auxiliary optical component 17 and at least onesensing component 16. The auxiliary optical component 17 can be a flashmodule for compensating for the color temperature, an infrared distancemeasurement component, a laser focus module, etc. The sensing component16 can have functions for sensing physical momentum and kinetic energy,and thereby can be an accelerator, a gyroscope, and a Hall effectelement, to sense shaking or jitters applied by hands of the user orexternal environments. Accordingly, the functions of the autofocusassembly 14 and the optical anti-shake mechanism 15 of the camera module11 can be aided and enhanced to achieve the superior image quality.Furthermore, the electronic device 10 according to the presentdisclosure can have a capturing function with multiple modes, such astaking optimized selfies, high dynamic range (HDR) under a low lightcondition, 4K resolution recording, etc. Additionally, the user canvisually see the captured image of the camera through the touch screen19 a and manually operate the view finding range on the touch screen 19a to achieve the auto focus function of what you see is what you get.

Furthermore, in FIG. 6B, the camera module 11, the sensing component 16and the auxiliary optical component 17 can be disposed on a flexibleprinted circuit board (FPC) 77 and electrically connected with theassociated components, such as the imaging signal processor 18, via aconnector 78 to perform a capturing process. Since the currentelectronic devices, such as smart phones, have a tendency of beingcompact, the way of firstly disposing the camera module and relatedcomponents on the flexible printed circuit board and secondlyintegrating the circuit thereof into the main board of the electronicdevice via the connector can satisfy the requirements of the mechanicaldesign and the circuit layout of the limited space inside the electronicdevice, and obtain more margins. The autofocus function of the cameramodule can also be controlled more flexibly via the touch screen of theelectronic device. In the 6th embodiment, the electronic device 10includes a plurality of sensing components 16 and a plurality ofauxiliary optical components 17. The sensing components 16 and theauxiliary optical components 17 are disposed on the flexible printedcircuit board 77 and at least one other flexible printed circuit board(its reference numeral is omitted) and electrically connected with theassociated components, such as the image signal processor 18, viacorresponding connectors to perform the capturing process. In otherembodiments (not shown herein), the sensing components and the auxiliaryoptical components can also be disposed on the main board of theelectronic device or carrier boards of other types according torequirements of the mechanical design and the circuit layout.

In addition, the electronic device 10 can further include but not belimited to a wireless communication unit, a control unit, a storageunit, a random access memory, a read-only memory, or a combinationthereof.

7th Embodiment

FIG. 7 shows a schematic view of an electronic device 20 according tothe 7th embodiment of the present disclosure. In FIG. 7, the electronicdevice 20 of the 7th embodiment is a smart phone. The electronic device20 includes camera modules 21 a, 21 b, 21 c and respective image sensors(not shown in drawings). Each of the image sensors is disposed on animage surface of a corresponding one of the camera modules 21 a, 21 band 21 c. The camera modules 21 a, 21 b and 21 c are disposed on thesame side of the electronic device 20 and may have different opticalproperties. At least one of the camera modules 21 a, 21 b and 21 cincludes an imaging lens assembly (not shown in drawings) according tothe present disclosure. In another embodiment according to the presentdisclosure (not shown in the drawings), the electronic device may be anelectronic device with at least two camera modules, e.g., a smart phonewith two camera modules, a smart phone with three camera modules, asmart phone with four camera modules, or a tablet personal computer withtwo camera modules.

In the photographing procedure of the electronic device 20, at least oneimage can be captured by the camera modules 21 a, 21 b and 21 c with anaid of an auxiliary optical component 27, and then the required effectslike zooming, delicate images would be achieved by the processors (suchas an image signal processor 28 and so on) equipped in the electronicdevice 20. In addition, it should be realized that the configurations ofthe camera modules of the electronic device according to the presentdisclosure are not limited to the positions disclosed in FIG. 7.

8th Embodiment

FIG. 8 shows an electronic device 30 according to the 8th embodiment ofthe present disclosure. The electronic device 30 of the 8th embodimentis a wearable device. The electronic device 30 includes a camera module31 and an image sensor (not shown in drawings). The camera module 31includes an imaging lens assembly (not shown in drawings) according tothe present disclosure. The image sensor is disposed on an image surfaceof the camera module 31.

The foregoing description, for purpose of explanation, has beendescribed with reference to specific embodiments. It is to be noted thatTables show different data of the different embodiments; however, thedata of the different embodiments are obtained from experiments. Theembodiments were chosen and described in order to best explain theprinciples of the disclosure and its practical applications, to therebyenable others skilled in the art to best utilize the disclosure andvarious embodiments with various modifications as are suited to theparticular use contemplated. The embodiments depicted above and theappended drawings are exemplary and are not intended to be exhaustive orto limit the scope of the present disclosure to the precise formsdisclosed. Many modifications and variations are possible in view of theabove teachings.

What is claimed is:
 1. An imaging lens assembly, comprising a plasticbarrel and an optical element set, the plastic barrel comprising aminimum opening, the optical element set comprising: an optical lenselement, in order from a center to a periphery thereof, comprising: aneffective optical portion, wherein an optical axis of the imaging lensassembly passes through the effective optical portion; and a peripheralportion surrounding the effective optical portion, wherein at least onesurface of an object-side peripheral surface and an image-sideperipheral surface of the peripheral portion comprises an annular sidewall, which is in a full-circle form and extends along a directionparallel to the optical axis; a light blocking sheet comprising: anobject-side surface facing towards an object side; an image-side surfacelocated opposite to the object-side surface; an annular abutting surfaceconnected between the object-side surface and the image-side surface,wherein the annular abutting surface and the annular side wall of theoptical lens element are disposed correspondingly to each other; and acentral opening surface surrounding and forming a central opening of thelight blocking sheet, wherein the central opening surface is connectedbetween the object-side surface and the image-side surface; and alight-shielding layer surrounding the central opening of the lightblocking sheet and comprising an annular concave-curved portion, whereinthe light-shielding layer extends from the peripheral portion of theoptical lens element towards an outer diameter surface of the opticallens element, and the annular concave-curved portion is for retainingthe light blocking sheet, so that there is no relative displacement inthe direction parallel to the optical axis between the annular abuttingsurface of the light blocking sheet and the annular side wall of theoptical lens element; wherein a maximum diameter of the light-shieldinglayer is ψH, a maximum diameter of the annular abutting surface is ψSd,a minimum diameter of the central opening surface is ψSa, and thefollowing condition is satisfied:0.03<(ψH−ψSd)/(ψSd−ψSa)<6.0.
 2. The imaging lens assembly of claim 1,wherein the maximum diameter of the light-shielding layer is ψM, themaximum diameter of the annular abutting surface is ψSd, the minimumdiameter of the central opening surface is ψSa, and the followingcondition is satisfied:0.1<[ψH/(ψSd−ψSa)]/π²<5.0.
 3. The imaging lens assembly of claim 2,wherein the annular abutting surface of the light blocking sheet and theannular side wall of the optical lens element are assembledcorrespondingly to each other to be aligned with the optical axis. 4.The imaging lens assembly of claim 3, wherein the annular concave-curvedportion is recessed towards the annular abutting surface of the lightblocking sheet.
 5. The imaging lens assembly of claim 1, wherein theannular side wall of the optical lens element and the annular abuttingsurface of the light blocking sheet are overlapped along a directionvertical to the optical axis, and the plastic barrel and at least oneportion of the light-shielding layer are not overlapped along thedirection parallel to the optical axis.
 6. The imaging lens assembly ofclaim 1, wherein the optical element set is disposed in the plasticbarrel, and the light-shielding layer is for retaining the optical lenselement in the plastic barrel.
 7. The imaging lens assembly of claim 6,wherein at least one portion of the light-shielding layer is connectedto the minimum opening of the plastic barrel.
 8. The imaging lensassembly of claim 1, wherein a minimum diameter of the annular side wallis ψWd, the maximum diameter of the annular abutting surface is ψSd, andthe following condition is satisfied:0.0 mm≤ψWd−ψSd<0.04 mm.
 9. The imaging lens assembly of claim 1, whereina minimum diameter of the annular side wall is ψWd, the maximum diameterof the annular abutting surface is ψSd, and the following condition issatisfied:0.005 mm<ψWd−ψSd<0.03 mm.
 10. The imaging lens assembly of claim 1,wherein the surface of the object-side peripheral surface and theimage-side peripheral surface of the peripheral portion furthercomprises: a flat abutting section extending along a direction verticalto the optical axis, wherein the flat abutting section is located closerto the effective optical portion than the annular side wall thereto, andthe flat abutting section and the light blocking sheet are in physicalcontact; and an annular groove structure being in a full-circle form,wherein the annular groove structure is connected between the annularside wall and the flat abutting section, the annular groove structure islocated farther from the effective optical portion than the flatabutting section therefrom, the annular groove structure is recessedfrom the surface of the object-side peripheral surface and theimage-side peripheral surface towards the other surface thereof to forman accommodating space, and at least one portion of the light-shieldinglayer is configured in the accommodating space.
 11. The imaging lensassembly of claim 1, wherein the maximum diameter of the light-shieldinglayer is ψH, the maximum diameter of the annular abutting surface isψSd, the minimum diameter of the central opening surface is ψSa, and thefollowing condition is satisfied:1.0<(ψH−ψSd)/(ψSd−ψSa)<5.0.
 12. A camera module, comprising: the imaginglens assembly of claim
 1. 13. An electronic device, comprising: thecamera module of claim 12; and an image sensor disposed on an imagesurface of the camera module.
 14. An imaging lens assembly, comprising aplastic barrel and an optical element set, the plastic barrel comprisinga maximum opening, the optical element set comprising: an optical lenselement, in order from a center to a periphery thereof, comprising: aneffective optical portion, wherein an optical axis of the imaging lensassembly passes through the effective optical portion; and a peripheralportion surrounding the effective optical portion, wherein at least onesurface of an object-side peripheral surface and an image-sideperipheral surface of the peripheral portion comprises an annular sidewall, which is in a full-circle form and extends along a directionparallel to the optical axis; a light blocking sheet comprising: anobject-side surface facing towards an object side; an image-side surfacelocated opposite to the object-side surface; an annular abutting surfaceconnected between the object-side surface and the image-side surface,wherein the annular abutting surface and the annular side wall of theoptical lens element are disposed correspondingly to each other; and acentral opening surface surrounding and forming a central opening of thelight blocking sheet, wherein the central opening surface is connectedbetween the object-side surface and the image-side surface; and alight-shielding layer surrounding the central opening of the lightblocking sheet and comprising an annular concave-curved portion, whereinthe light-shielding layer extends from the peripheral portion of theoptical lens element towards an outer diameter surface of the opticallens element, and the annular concave-curved portion is for retainingthe light blocking sheet, so that there is no relative displacement inthe direction parallel to the optical axis between the annular abuttingsurface of the light blocking sheet and the annular side wall of theoptical lens element; wherein a length along the direction parallel tothe optical axis of the light-shielding layer is L, a length along thedirection parallel to the optical axis of the plastic barrel is Lb, andthe following condition is satisfied:0.0<L/Lb<0.5.
 15. The imaging lens assembly of claim 14, wherein theperipheral portion of the optical lens element comprises a gate trace,and the gate trace is located farther from the effective optical portionthan the annular side wall therefrom.
 16. The imaging lens assembly ofclaim 14, wherein an air gap is formed between the peripheral portion ofthe optical lens element and the plastic barrel, and at least oneportion of the light-shielding layer is configured in the air gap. 17.The imaging lens assembly of claim 15, wherein at least one portion ofthe light-shielding layer is located farther from the effective opticalportion than the gate trace therefrom, and the light-shielding layercovers and physically contacts the gate trace.
 18. The imaging lensassembly of claim 14, wherein the length along the direction parallel tothe optical axis of the light-shielding layer is L, the length along thedirection parallel to the optical axis of the plastic barrel is Lb, andthe following condition is satisfied:0.1<L/Lb<0.4.
 19. The imaging lens assembly of claim 14, wherein theoptical element set is disposed in the plastic barrel, and thelight-shielding layer is for retaining the optical lens element in theplastic barrel.